Migrated from Method backlog

This issue was created from a legacy filesystem backlog card. GitHub Issues are now the live work tracker; repository docs remain Method evidence.

Source backlog: docs/method/backlog/v0.1.0/DOCS_release-grade-quickstart.md
Original lane: v0.1.0
Original legend: DOCS

Original backlog card

Release-Grade Quickstart

Status: initial executable quickstart implemented; product guide polish remains.

Depends on:

• External contract proof fixture
• Reference trusted runtime host loop
• Versioned contract and API compatibility

Why now

v0.1.0 should be buildable by a developer who did not help author the
internals. The quickstart is the executable proof that the public path is
understandable and honest.

Required path

The quickstart should show:

1. write or use a small GraphQL contract;
2. generate Wesley helpers;
3. install the package into Echo;
4. submit an intent without ticking;
5. run a trusted host loop;
6. observe the intent outcome;
7. query a bounded reading;
8. inspect retained evidence;
9. replay locally.

Acceptance criteria

• Commands pass on a clean checkout.
• The guide names which APIs are application-facing and which are host-only.
• Examples do not call tick from application code.
• Error examples include unsupported operation/query and missing retention
  or bounded residual posture.
• The guide links to the version compatibility policy.

Implemented local slice

docs/quickstart-local-contract-host.md now documents the executable local
contract-host release witness, the app/host API split, compatibility checks,
and retention boundary. The command path is
cargo xtask test-slice contract-path-release.

Non-goals

• Do not write a marketing landing page.
• Do not require a full editor, automation app, or distributed deployment.
• Do not promise streaming subscriptions.